大正14（1925）年に建てられた豪商・旧三井家の別邸で重要文化財。通常非公開の「主屋2階・3階望楼」から眺める庭園の優雅な紅葉は風情がたっぷりです。 

Built in 1925, this former villa of the Mitsui family, who were wealthy merchants, is an important cultural property. The elegant fall foliage in the garden which can be viewed from the second- and third-floor watchtowers in the main house are full of atmosphere.